Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 24 Feb 2012 (Friday) 15:28
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

Auto focus with teleconverter.

 
DreDaze
happy with myself for not saying anything stupid
Avatar
18,240 posts
Gallery: 45 photos
Likes: 2797
Joined Mar 2006
Location: S.F. Bay Area
     
Feb 25, 2012 14:22 |  #16

why don't you try just using the 100-400 for a bit before getting a TC...see how it even works out for you before deciding you need more reach before even getting the lens


Andre or Dre
gear list
Instagram (external link)
flickr (external link)

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)
John_T
Goldmember
Avatar
3,098 posts
Gallery: 127 photos
Best ofs: 2
Likes: 446
Joined Jun 2003
Location: Switzerland
     
Feb 25, 2012 14:25 |  #17

Whatever you decide, with the 7D remember that 400mm x1.6=640 x1.4=896 or x2=1280

While IS will work, the longer you get the less effective it will be. You can for all practical purposes not handhold at all and will need a steady tripod and head. The longer you get out there, the greater skill and experience you will need.

I have gotten some amazing shots with TCs, even stacking the 1.4 and the 2x on the 100-400@400mm = 1120mm on FF, 1792mm on crop. Live View, MLU, remote release, sandbags, etc are a must. It's fun, but forget any moving subject, have no expectations and don't be disappointed if you only manage one halfway decent shot out of _________.


Canon : EOS R : 5DIV : 5DS R : 5DIII : 7DII : 40 2.8 : 50 1.4 : 35L : 85L : 100L IS Macro : 135L : 16-35L II : RF-24-105L IS : 70-200L II : 100-400L IS II : 1.4x & 2x TC III : 600EX-RT : 580EX : 430EX : G1XII : Markins Q10 & Q3T : Jobu Gimbal : Manfrotto Underware : etc...

  
  LOG IN TO REPLY
JuliusUpNorth
Senior Member
522 posts
Joined Jun 2007
Location: Whitehorse, Yukon Territory, Canada
     
Feb 25, 2012 15:06 |  #18

I sometimes use the Canon 1.4X converter with my 100-400. I am lucky in that, with the pins taped, autofocus on my 50D works surprisingly well. The same cannot be said for the 2X converter, though.

Julius




  
  LOG IN TO REPLY
PhrozeN_FisH
Member
Avatar
210 posts
Likes: 2
Joined Feb 2010
Location: Central, Ohio
     
Feb 25, 2012 15:18 |  #19

I recently purchased a Kenko 1.4x Teleplus Pro 300 DGX to use with my 100-400. The pins do not need to be taped to retain autofocus and it reports the focal length/aperature accurately to the camera. I have only done a few initial tests with it on my 60D, but it seems to do pretty well. Focus searches quite a bit in low contrast or low light conditions. With fair to good light/contrast it focuses quickly and picture quality doesn't appear to suffer very much. If I can ever get a decent day off with good light I plan to test it a bit more. I have also tried a non reporting 2x and could not get autofocus to operate at all with this combination.


Rod
____________
| Canon 7D | Canon EF-S 18-135mm | Canon EF 100-400L | Canon EF 85 f/1.8 | Canon 430EX II | other assorted crap |

  
  LOG IN TO REPLY
blakeG!
THREAD ­ STARTER
Goldmember
Avatar
1,405 posts
Joined May 2010
Location: Oklahoma
     
Feb 25, 2012 15:32 |  #20

DreDaze wrote in post #13965500 (external link)
why don't you try just using the 100-400 for a bit before getting a TC...see how it even works out for you before deciding you need more reach before even getting the lens

That's what I was planning on doing, but I would really like to get some moon shots as well.


-Blake
EOS 7D
Canon 100mm F 2.8 Macro, Canon 400mm 5.6L, Tokina 11-16mm 2.8, Canon 28-135,Canon 430exii

  
  LOG IN TO REPLY
Snydremark
my very own Lightrules moment
18,534 posts
Gallery: 49 photos
Likes: 1596
Joined Mar 2009
Location: Issaquah, WA USA
     
Feb 25, 2012 18:31 |  #21

That combo (7D+100-400) is perfectly capable of decent moon shots in its own :)


- Eric S.: My Birds/Wildlife (external link) (7D MkII/5D IV, Canon 10-22 f/3.5-4.5, Canon 24-105L f/4 IS, Canon 70-200L f/2.8 IS MkII, Canon 100-400L f/4.5-5.6 IS I/II)
"The easiest way to improve your photos is to adjust the loose nut between the shutter release and the ground."

  
  LOG IN TO REPLY
hollis_f
Cream of the Crop
Avatar
10,649 posts
Gallery: 1 photo
Likes: 85
Joined Jul 2007
Location: Sussex, UK
     
Feb 26, 2012 09:32 |  #22

Can some of those who say that AF 'works' with a 100-400 at 400mm or a 400 f5.6, with TC, please post some examples of birds in flight taken with that combination.


Frank Hollis - Retired mass spectroscopist
Give a man a fish and he'll eat for a day. Teach a man to fish and he'll complain about the withdrawal of his free fish entitlement.
Gear Website (external link)

  
  LOG IN TO REPLY
John_T
Goldmember
Avatar
3,098 posts
Gallery: 127 photos
Best ofs: 2
Likes: 446
Joined Jun 2003
Location: Switzerland
     
Feb 26, 2012 13:51 |  #23

Ha-ha, man make joke. I take MIF for OP.

I just went out and took some moon shots with the 7D + 100-400L

- @400mm
- @400mm + 1.4 TC = 560mm (890mm with crop factor)
- @400mm + 2.0 TC = 800mm (1280mm with crop factor)
- @400mm + 1.4 TC + 2.0 TC + 1120mm (1792mm with crop factor)

Funnily enough, I will only post the last because though the last has the most pixels, they effectively all look the same.


HOSTED PHOTO
please log in to view hosted photos in full size.


Canon : EOS R : 5DIV : 5DS R : 5DIII : 7DII : 40 2.8 : 50 1.4 : 35L : 85L : 100L IS Macro : 135L : 16-35L II : RF-24-105L IS : 70-200L II : 100-400L IS II : 1.4x & 2x TC III : 600EX-RT : 580EX : 430EX : G1XII : Markins Q10 & Q3T : Jobu Gimbal : Manfrotto Underware : etc...

  
  LOG IN TO REPLY
hania
Senior Member
919 posts
Joined Nov 2004
Location: Staffordshire, UK
     
Feb 26, 2012 13:55 |  #24

pol024 wrote in post #13960584 (external link)
on a 7d yes

canon 1.4 x didn't work on my 7D and 100-400.


No AF at all


Gear List

  
  LOG IN TO REPLY
watt100
Cream of the Crop
14,021 posts
Likes: 29
Joined Jun 2008
     
Feb 26, 2012 16:31 |  #25

John_T wrote in post #13970275 (external link)
Ha-ha, man make joke. I take MIF for OP.

I just went out and took some moon shots with the 7D + 100-400L

- @400mm
- @400mm + 1.4 TC = 560mm (890mm with crop factor)
- @400mm + 2.0 TC = 800mm (1280mm with crop factor)
- @400mm + 1.4 TC + 2.0 TC + 1120mm (1792mm with crop factor)

Funnily enough, I will only post the last because though the last has the most pixels, they effectively all look the same.

looks pretty good for 1,120mm




  
  LOG IN TO REPLY
John_T
Goldmember
Avatar
3,098 posts
Gallery: 127 photos
Best ofs: 2
Likes: 446
Joined Jun 2003
Location: Switzerland
     
Feb 26, 2012 17:05 |  #26

...well, a little less atmosphere, little colder, tiny adjustments, weight the tripod, beanbag the lens, refine the settings, stop breathing, none of which I did, would have been a little sharper. Focus was with Live View. Point is, the difference between 400mm and 1120mm is pixels, no more detail.


Canon : EOS R : 5DIV : 5DS R : 5DIII : 7DII : 40 2.8 : 50 1.4 : 35L : 85L : 100L IS Macro : 135L : 16-35L II : RF-24-105L IS : 70-200L II : 100-400L IS II : 1.4x & 2x TC III : 600EX-RT : 580EX : 430EX : G1XII : Markins Q10 & Q3T : Jobu Gimbal : Manfrotto Underware : etc...

  
  LOG IN TO REPLY
John_T
Goldmember
Avatar
3,098 posts
Gallery: 127 photos
Best ofs: 2
Likes: 446
Joined Jun 2003
Location: Switzerland
     
Feb 27, 2012 05:43 |  #27

...now I'm a little startled. This morning I took out the same 7D+100-400+1.4TC+2.0TC as I used in the moon shot last night, and just on a lark shot this Magpie about 50 meters distant in the top of a tree, far away and tiny.

That's 1120mm (1792mm), you aren't supposed to be able to get shots like this with that...


HOSTED PHOTO
please log in to view hosted photos in full size.


Canon : EOS R : 5DIV : 5DS R : 5DIII : 7DII : 40 2.8 : 50 1.4 : 35L : 85L : 100L IS Macro : 135L : 16-35L II : RF-24-105L IS : 70-200L II : 100-400L IS II : 1.4x & 2x TC III : 600EX-RT : 580EX : 430EX : G1XII : Markins Q10 & Q3T : Jobu Gimbal : Manfrotto Underware : etc...

  
  LOG IN TO REPLY
modchild
Goldmember
Avatar
1,469 posts
Likes: 1
Joined Jul 2011
Location: Lincoln, Uk
     
Feb 27, 2012 08:15 |  #28

watt100 wrote in post #13960516 (external link)
Do a search, the Kenko Pro 300 DGX 1.4x teleconverter works on the 100-400 with autofocus and IS

I've got one of these TC's and I can confirm that the 100-400 L does indeed retain AF and IS without having to tape any pins at all. It works very well in good light and will slow down as the light dissipates, but mine still does AF at dusk.


EOS 5D MkIII, EOS 70D, EOS 650D, EOS M, Canon 24-70 f2.8L MkII, Canon 70-200 f2.8L IS MkII, Canon 100 f2.8L Macro, Canon 17-40 f4L IS, Canon 24-105 f4L IS, Canon 300 f4L IS, Canon 85 f1.8, Canon 50 f1.4, Canon 40 f2.8 STM, Canon 35 f2, Sigma 150-500 OS, Tamron 18-270 PZD, Tamron 28-300 VC, 580EX II Flash, Nissin Di866 MkII Flash, Sigma EM 140 Macro Flash and other bits.

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

6,907 views & 0 likes for this thread
Auto focus with teleconverter.
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is dsk26894
1009 guests, 345 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.